"I am grateful for this opportunity to pay tribute to my dear friend and life-long mentor Dr. Gunter Bolch as a co-editor of this special issue in his memory....

This special issue provides a collection of original contributions by former students of his and colleagues who have cooperated with him. While the contributions were solicited by invitation based on the relationship at least one author had with Gunter, all papers were thoroughly reviewed by the last three international reviewers each and subsequently carefully revised by the authors. As a result, we have been able to collect ten quality-assured papers as a witness to Gunters productive academic life and memory of his achievements.

Accordingly, the focus of the presented papers is fairly wide-spread in the field of Performance Modeling and reaches from application-oriented topics (e.g., HSDPA, Mobile Systems, Cognitive Radio Networks, Automotive CAN Communication) to more theoretical essays (e.g., Moments-based analysis, Non-ergodic Jackson Networks)."

[Prof. Dr.-Ing. Hermann de Meer, Dipl.-Inf. Patrick Wüchner, Computer Networks, Volume 53, Issue 8, Editorial]